Assurans (Sildenafil Citrate) — Patient Information for Australia
Assurans contains sildenafil citrate, a medicine used to treat certain sexual health and blood flow conditions. This page explains how Assurans works, how it’s typically used, important safety information, and practical guidance for getting the best results. It is written for a patient-friendly understanding.
Note: Medicines affect people differently. Always follow the instructions given to you by a healthcare professional and read the product packaging carefully.
1) Basic product information
- Medicine name: Assurans
- Active ingredient: Sildenafil citrate
- Common uses: Erectile dysfunction (ED); sometimes pulmonary arterial hypertension (PAH) depending on the product/strength and local prescribing
- Medicine class: PDE5 inhibitor (phosphodiesterase type 5 inhibitor)
- Available forms: Typically tablets (strength varies by product)
How it is supplied: Availability in Australia depends on supply arrangements and regulatory status. Some packs may be listed via pharmacies or approved online channels.
2) How Assurans works (mechanism of action)
Assurans helps improve blood flow to the penis by targeting a pathway in the body involved in erections.
- During sexual stimulation, your nervous system releases chemicals that increase nitric oxide (NO) in the erectile tissue.
- NO activates an enzyme pathway that raises cGMP levels.
- Sildenafil blocks PDE5, an enzyme that breaks down cGMP.
- As a result, cGMP levels stay higher for longer, allowing smoother blood vessel relaxation and improved blood flow.
Important: Assurans does not automatically cause an erection. Sexual arousal is still required for best results.
3) Pharmacokinetics (how the body processes sildenafil)
Pharmacokinetics describes absorption, distribution, metabolism and elimination.
- Absorption: Sildenafil is absorbed after oral dosing. Peak blood levels typically occur within about 30 to 120 minutes, though this can vary with food intake.
- Distribution: Sildenafil binds to plasma proteins and distributes into tissues where PDE5 is present.
- Metabolism: Mainly metabolised in the liver by CYP3A4 (and to a lesser extent other pathways). This is why some medicines can strongly affect sildenafil levels.
- Elimination: Sildenafil metabolites are eliminated primarily via the faeces and to a lesser extent urine.
- Duration of effect: Many people notice effects for several hours. The time window can vary between individuals and with dose.
Variability is normal: Age, liver and kidney function, other medicines, and smoking/alcohol patterns can change how quickly sildenafil works and how long it lasts.
4) What Assurans is used for (indications)
The most common indication is:
- Erectile dysfunction (ED): Trouble achieving or maintaining an erection suitable for sexual activity.
Depending on the specific product strengths and regulatory listing, sildenafil may also be used for:
- Pulmonary arterial hypertension (PAH): A condition that affects blood pressure in the lungs. (Use for PAH depends on dosing form/strength and local prescribing practices.)
Not for everyone: People with certain heart conditions or who take specific medicines must not use sildenafil. See the “Safety profile” section for key warnings.
5) Typical dosing (how much and how often)
Dosing varies by the condition, your individual health profile, and tolerability. Always follow the dose instructions provided with your medication.
For erectile dysfunction (typical approach)
- Common starting doses in adult men are often 50 mg, though a lower or higher dose may be used depending on age, side effects, and other factors.
- Many people take sildenafil once when needed, rather than multiple times daily.
- Maximum frequency: Do not take sildenafil more frequently than recommended on your product label and by your healthcare professional.
For older adults or those with certain risk factors
- Your clinician may choose a lower starting dose if you are older or have liver problems, or if you take medicines that increase sildenafil levels.
Do not increase dose to “make it work.” If the dose is not effective or side effects occur, seek medical guidance.
6) Timing: when to take Assurans
For erectile dysfunction:
- Take Assurans about 30 to 60 minutes before sexual activity.
- For some people it may work sooner or later; peak effect often aligns with the time range of absorption.
- If you feel it takes longer for your body, discuss timing adjustments with a healthcare professional rather than simply taking more.
Missed dose: Sildenafil for ED is usually taken as-needed. If you are taking it for a scheduled regimen (e.g., specific conditions under clinician direction), follow that schedule.
7) Food interactions (including high-fat meals)
Food—especially high-fat meals—can affect how quickly sildenafil works.
- A heavy or fatty meal may delay absorption, making the onset slower.
- For best results, consider taking Assurans with a lighter meal or on an emptier stomach, depending on your tolerance.
Tip: If you notice delayed effect after meals, adjust your meal timing (e.g., take it earlier relative to dinner) rather than changing to a higher dose without advice.
8) Alcohol and medicine interactions
Alcohol
- Alcohol can reduce sexual performance and may worsen side effects such as dizziness or low blood pressure.
- Drinking heavily increases the likelihood of light-headedness and can make erections more difficult.
Practical approach: Moderate alcohol is less likely to cause problems, but everyone responds differently. If you experience dizziness, avoid further alcohol and seek advice.
Major medicine interactions (very important)
Sildenafil can interact with other medicines that affect blood vessels, heart rhythm, and drug-metabolism pathways.
| Medicine type | Examples (not exhaustive) | Why it matters | Typical advice |
|---|---|---|---|
| Nitrates | Glyceryl trinitrate (GTN), isosorbide dinitrate/mononitrate | May cause a dangerous drop in blood pressure | Do not use together |
| “Poppers” | Amyl nitrite / similar products | Also affects nitric oxide pathways and BP | Do not use together |
| Riociguat | Used for pulmonary hypertension | Increases cGMP effect, risk of low BP | Do not use together |
| Alpha-blockers | Tamsulosin, doxazosin, prazosin (examples) | May increase risk of dizziness/low BP when combined | May require careful timing and dose adjustment |
| Strong CYP3A4 inhibitors | Some HIV/HCV medicines, ketoconazole/itraconazole, clarithromycin (examples) | Raises sildenafil blood levels → more side effects | May require lower dose and medical supervision |
| CYP3A4 inducers | Rifampicin, certain anti-seizure medicines (examples) | May reduce sildenafil effectiveness | Effect may be reduced; dosing may need adjustment |
| Other PDE5 inhibitors | Tadalafil, vardenafil (etc.) | Stacked PDE5 effects → higher risk of side effects | Avoid combining |
| Blood pressure medicines | Antihypertensives (various) | May add to BP-lowering effects | Monitor for dizziness; seek advice if symptomatic |
Always check: Tell a healthcare professional or pharmacist about all medicines and supplements you use, including “natural” products and recreational drugs.
9) Safety profile: when Assurans may be unsuitable
Assurans is generally well-tolerated when used appropriately, but it has important risks and side effects. Do not start sildenafil if you have been advised against it.
Do not use if you have been told to avoid PDE5 inhibitors or if you:
- Use nitrate medicines for chest pain (angina) or have used them recently
- Use riociguat
- Have certain serious heart conditions where sexual activity is not considered safe
- Have a history of severe reaction to sildenafil
Seek urgent medical help if you experience:
- Chest pain or symptoms of a heart problem
- Sudden vision loss or severe eye pain
- Sudden hearing loss or ringing in the ears with reduced hearing
- Severe dizziness, fainting, or signs of very low blood pressure
- Priapism (an erection lasting 4 hours or more)
- Severe allergic symptoms such as swelling of the face/lips, wheeze, or rash with breathing difficulty
Common side effects
- Headache
- Flushing (warmth/redness)
- Indigestion or nausea
- Stuffy or runny nose
- Dizziness
- Visual disturbance (e.g., mild changes in colour perception, blurred vision)
Less common but important considerations
- Higher risk of side effects if you are sensitive to vasodilation, older, dehydrated, or combined with other BP-lowering agents.
- People with certain heart or cardiovascular conditions may require careful evaluation before use.
10) Practical use tips (getting the most from Assurans)
- Give yourself time: Take it at the right time before sexual activity (often 30–60 minutes for ED), especially if you had a heavy meal.
- Use it with sexual stimulation: Sildenafil helps you respond to arousal; it doesn’t replace foreplay.
- Avoid smoking right before: Smoking can impair blood vessel function and erectile quality.
- Reduce excessive alcohol: Too much alcohol can significantly worsen erection quality.
- Start with the correct dose: Do not “test higher” on your own. If it’s not effective, talk to a healthcare professional.
- Hydrate: Dehydration can worsen dizziness and headaches.
- Manage stress and anxiety: Performance anxiety can reduce the effect of any ED medicine.
- Plan around interactions: If you’re on interacting medicines (e.g., alpha-blockers, antifungals, certain antibiotics, HIV/HCV medicines), seek advice before taking sildenafil.
11) Alternative options
Depending on your situation, alternatives may include other PDE5 inhibitors or different treatment approaches.
Other oral PDE5 inhibitors
- Tadalafil (often longer-lasting)
- Vardenafil
- Avanafil
Why switch? Different PDE5 inhibitors may suit different people depending on timing, side effects, and other medications.
Non-oral options
- Vacuum erection devices
- Intracavernosal injections (prescribed)
- Intraurethral therapy (selected patients)
- Psychosexual counselling if anxiety or relationship factors contribute
Lifestyle and health: Managing diabetes, cholesterol, blood pressure, sleep, weight, and cardiovascular fitness can improve erectile function over time.
12) Market and legal context in Australia (overview)
In Australia, medicines are regulated through the Therapeutic Goods Administration (TGA). The availability and supply of sildenafil products depends on how they are listed/registered, the strength and formulation, and the dispensing pathway at the time of purchase.
Online purchasing: Reputable online pharmacies operate in accordance with applicable Australian laws and pharmacy standards. When choosing a service, consider:
- Clear listing of the active ingredient and strength
- Legitimate pharmacy accreditation and contact details
- Secure checkout and privacy protections
- Transparent delivery terms and handling conditions
- Customer support and clear information about returns and reporting issues
Pharmacovigilance: If you experience side effects, report them to your pharmacist or healthcare provider, and consider using the relevant national reporting systems.
13) Recent guidance and safety updates (general note)
Across many PDE5 inhibitor medicines, Australian and international health communications have continued to emphasise:
- Strict avoidance with nitrates and riociguat
- Caution with alpha-blockers and dose timing
- Improved awareness of rare but serious events such as priapism and sudden vision or hearing changes
- Checking drug interactions—especially with strong inhibitors/inducers of drug metabolism (e.g., CYP3A4)
Because recommendations may evolve, always check the most current product information leaflet and talk to a healthcare professional if you have questions.
14) Delivery and availability
Availability of Assurans in Australia can vary based on stock levels, strength, and packaging. When supplied via an online pharmacy, typical expectations include:
- Order processing time: Often 1–2 business days (varies by pharmacy and stock status)
- Delivery timeframe: Commonly a few business days depending on your location and courier service
- Packaging: Delivered in tamper-evident packaging where appropriate
- Storage: Store tablets according to the label (usually at room temperature away from moisture and direct sunlight)
If you need help: Contact customer support promptly if there is a delay, damage to packaging, or you receive the wrong product.
15) FAQ (Frequently asked questions)
How long does Assurans last?
Many people notice effects for several hours. The exact duration varies by dose, food intake, age, and other medicines. If you need a longer window, discuss options with a healthcare professional.
What if it doesn’t work the first time?
It can take trial of timing and correct dose to find what works for you. Ensure you took it at the right time and had sexual stimulation. Do not increase dose on your own—seek advice.
Can I take Assurans every day?
For erectile dysfunction, sildenafil is commonly used as-needed. Daily use may be considered for other conditions under clinician direction. Follow your label instructions.
Does taking it with food always reduce effectiveness?
A heavy or high-fat meal may delay onset and make the timing feel “off.” It doesn’t always eliminate effect, but it can change when you feel it. Consider lighter meals or adjusting the timing.
Is it safe with blood pressure medicines?
Many people can use sildenafil with blood pressure medications, but there is a risk of added blood pressure lowering, which may cause dizziness. If you feel light-headed, sit or lie down and seek medical advice.
Can I take sildenafil with nitrates for chest pain?
No. Sildenafil combined with nitrates can lead to dangerously low blood pressure. This is a key safety contraindication.
Can I drink alcohol when using Assurans?
Small amounts may be tolerated, but alcohol can reduce sexual performance and increase dizziness. Avoid heavy drinking and stop alcohol if you experience side effects.
What should I do if I get an erection that won’t go away?
If you have an erection lasting 4 hours or more, seek urgent medical care immediately to reduce the risk of tissue damage (priapism).
Are there situations where I should not use sildenafil?
Yes. Avoid sildenafil if you use nitrates, riociguat, or if a healthcare professional has advised against it due to serious cardiovascular risks or previous reactions. If you have heart disease, ask a clinician before use.
How should I store Assurans?
Store tablets as directed on the package—typically at room temperature, away from moisture, heat, and out of reach of children.
What if I miss a dose?
If used as-needed for ED, there usually is no “missed dose.” If it’s part of a planned schedule for another condition, follow the schedule provided.
16) Final reminders
- Assurans (sildenafil citrate) improves erectile blood flow by blocking PDE5, but sexual stimulation is still needed.
- Be cautious with food timing, alcohol, and especially drug interactions.
- If you experience severe side effects—especially chest pain, fainting, sudden vision/hearing loss, or priapism—seek urgent medical help.
- For the safest and most effective use, keep your medicine list up to date and ask a pharmacist or healthcare professional if you’re unsure.

